Pneumatic system controlling operation of a filling valve in a container filling machine

ABSTRACT

First and second fluidic control devices of special construction receive streams of air that are deflected to atmosphere at predetermined intervals by means of jets of air controlled by valves and the liquid level in a container as the machine moves through its cycle. At one point in the cycle, air pressure from one of the fluidic control devices causes the filling valve to open and remain open until a jet of control air is delivered to the fluidic control device when the desired liquid level in the container is reached, whereupon the control device is vented to atmosphere and the filling valve closes. If a container is not present when it should be, the filling valve will not open and there will be no blow-down through the level sensing tube.

1 1 Mar. 5, 1974 1 PNEUMATIC SYSTEM CONTROLLING OPERATION OF A FILLINGVALVE IN A CONTAINER FILLING MACHINE [75] Inventor: Charles V. Wilhere,Pittsburgh, Pa.

[73] Assignee: Horix Manufacturing Company, Pittsburgh, Pa.

[22] Filed: Nov. 27, 1972 [21 Appl. No.: 309,733

[56] References Cited UNITED STATES PATENTS 3,441,066 4/1969 Wilhere141/148 3,545,502 12/1970 Nunl-ist 141/141 X Primary ExaminerHouston S.Bell, Jr. Assistant ExaminerFrederick R. Schmidt Attorney, Agent, orFirm-Brown, Murray, Flick &

Peckham I57 I ABSTRACT First and second fluidic control devices ofspecial construction receive streams of air that are deflected toatmosphere at predetermined intervals by means of jets of air controlledby valves and the liquid level in a container as the machine movesthrough its cycle. At one point in the cycle, airpressure from one ofthe fluidic control devices causes the filling valve to open and remainopen until a jet 'of control air is delivered to the fluidic controldevice when the desired liquid level in the container is reached,whereupon the control device is vented to atmosphere and the fillingvalve closes. If a container is not present when it should be, thefilling valve will not open and there will be no blow-down through thelevel sensing tube.

10 Claims 8 Drawing Figures 1 PNEUMATIC SYSTEM CONTROLLING OPERATION OFA FILLING VALVE IN A CONTAINER FILLING MACHINE In rotating machines forfilling containers with liquid product to a predetermined level,different systems have been devised for opening and closing the fillingvalves at the right times. These control systems often are pneumaticsystems. They may make use of valves only, or valves and fluidamplifiers for controlling the flow of the air in the systems. Althoughthey accomplish their purpose, it is desirable to provide a simplersystem with a minimum of valves and other parts and that will be lessexpensive than the known control systerns. These are the purposes andobjects of the present invention, in which the switching of thedirection of fiow of air through the control system is accomplishedmainly by jets of air impinging on main air streams to deflect them fromtheir normal paths.

The preferred embodiment of the invention is illustrated in theaccompanying drawings, in which FIG. Iiis a fragmentary vertical sectionof a single filling station of a container filling machine,;with someparts shown in elevation; I i l FIG. 2 is a partial end view;

F IG. 3 is a diagram of the pneumatic pressure system I that controlsthe filling valve, showing the system be fore a container is in fillingposition;

FIG. 4 is a diagram of the system when'a container is in fillingposition, but filling has notyet'start'ed;

FIG. 5 is a diagramof the system during-filling,

filling is stopped; and

FIGS. 7 and 8 are diagramscorresponding to FIGS.

3 and 5, respectively, of a modification.

Referring to FIGS. 1 and 2 of the drawings, the type of containerfilling machinewith which this invention is most useful is the kind inwhich severalfillingstations are spaced circumferentially around arotating center post l supporting a liquid product tank2. At eachstation a container 3, such as a bottle, is raised byv a travelingsupporting member 4 in a well-known, manner to cause the open upper endof the bottleto firstv engage a guide 6 at the lowerend of-the fillingtube 7 and then to move the guide upwardly as the bottle moves up aroundthe tube. The guide is supported in a ring 8 suspended from the lowerends ofa pair of vertical guide rods 9 shown in FIG.;2 that are slidablymounted in bushings 10 secured to the opposite sides ofa horizon- I talarm 11 projecting radially outwardly from the bottom of thetank. :As-thepost rotates, itcarries the-arm and like arms at the other stationsofthe machine in a circle around the axis of the post. The upper ends ofthe two guide rods are mountedin a cross bar 12 normally resting on topof the arm and provided centrally with an upwardly projecting boss I vThe tank'is provided above the inner end of the arm with an outlet portI5 that opens into the top ofa longitudinal passage 16 in the arm. Theinner end of the arm is closed by a plug 17. The bottom ofthe arm hasanoutlet port 18 connected by a coupling 19 to the upper end of thefilling tube. Inside the arm, between its, inlet and outlet ports, thereis a valve seat 2I that normally. is closed by a filling valve member 22mounted on the inner end of a horizontal piston rod 23 slidable in abushing 24 rigidly. mounted in the arm between its outer end and itsoutlet port. Mounted on the outer end of this piston rod is a piston 25,between which and a 3Ov FIG. 6 is a diagram of the system-at the momentthat v cup 26 projecting from the outer end of the arm a coil spring 27is compressed to hold the valve member against seat 21. Between'thepiston and bushing 24, the arm is provided with an inlet 28 for airunder pressure, by which the piston can be moved toward the outer end ofthe arm to unseat the valve member so that liquid from the tank canflowpast it and down through the filling tube into the bottle. 7

After a bottle has been placed on its support 4 and elevated around thelower end of the filling tube, thereby raising guide 6 and cross bar 12,the rotation ment so that air under pressure will be delivered to thearm through its inlet 28 to open the filling valve. The

pneumatic pressure system that accomplishes this is carried by themachine, except for the primary source of air pressure, such as an aircompressor or pressure tank, and there is a separate pneumatic pressuresystem for each individual filling valve. Most of the elements of thepneumatic system are enclosed in a case 30 supported by a bar 31extending outwardly from the upper end of a post 32 screwed into themarginal area of the bottom of the tank that projects beyond itssidewall. Reference will now be made to FIGS. 3 to 6 toexplain theconstruction and operation of the pneumatic system. Y

Referring to. FIG. 30f the drawings, inside of case 30 of FIG. 1 thereis an air-conducting element 35 having an inlet connected'by a mainsupply tube 36' to'the source of air pressure 37.'This element'also has'a main outlet for the air, and a bypass 38 that can exhaust toatmospherewhen a closure member39 is-separated from the by-pass outlet.This separation is effected by the elevation of a container into fillingposition. Referring back to FIG. I, the by-pass extends'out ofthe caseand up through the topofa block 41 attached to the side of the case.Normally resting on top of the by-pass and closing it is the closuremember 39, which K is mounted on the upper end of a rod 142 that isslidable vertically in the block., The rod also extends down below theblock and carries a weight 43 on its lower 13 on .top

vice 45 isprovided with a control chamber 46 and an output chamber 47that are connected by a central orifice 48. The outer endsof the twochambers are provided with air inletsaligned with the central orifice.

Nozzles 49 and 50 extend from these inlets toward that orifice, buttheir inner ends are spaced from it. The two inlets are connected bytubes 51 and 52, respectively, to a tube 53 leading from supply tube 36.The modulator is so constructed thatif thestreams of air issuing fromthe two nozzles are not interfered with, they will impinge upon eachother in the area between the-central orifice 48 and the outlet ofnozzle 49 in the output chamber and raise the air pressure therein. Theoutlet of air conducting element 35 is connected by a tube 54 with theside of the control chamber46 in a position to cause a jet of air toimpingeupon the side of the stream issuing from the nozzle in thatchamber. This deflects the stream laterally so that the stream fromnozzle 49 can enter the control chamber, which is vented totheatmosphere by way of an outlet 55. The output chamber, on the otherhand, is provided with an outlet connected by a tube 56 with a pneumaticrelay 66 which, when opened by air from the tube, connects pressuresource 37 or some other source of high pressure with a tube 66A leadingto the air inlet 28 (FIG. 1) of the filling valve.

The outlet of output chamber 47 also is connected by another tube 57with the side of the control chamber 58 of the second fluidic controldevice 59. The inlets to the two nozzles of this device are connected bytubes 60, 61 and 62 with the main air supply tube 36. The controlchamber has an outlet 63 to atmosphere, and

the output chamber 64 has an outlet connected by a tube 65 to the sideof the control chamber of the first impact modulator.

Since in FIG. 3 the opposed streams of air in the second modulator 59are not being deflected by deflecting jets of air, they are impinging oneach other in the output chamber, which causes the air therein to buildup pressure and flow out through tube 65 to the control chamber of theother modulatonThe jet of air issuing from this tube is directed todeflect the streams from the two nozzles 49 and 50, even if the flowfrom tube 54 is shut off. The side of the control chamber of the secondmodulator 59 is also connected by a tube 67 to the outlet of a normallyclosed start-fill valve 68, the inlet of which is connected to the mainsupply tube 36. This valve is provided with an actuating member 69 thatextends out of case 30 and that engages a stationary cam (not shown) fora moment during each revolution of the filling machine, whereby to openthe valve for a moment to deliver a jetof deflecting air to the side ofcontrol chamber 58. j

The output, chamber of thefirst modulator likewise is connected throughits outlet tube 56 and a tube 71 with a junction chamber 72, from thebottom of which a tube 73 extends down through arm 11 and a slot 74 inpiston rod 23 and into the upper end of a levelsensing tube 75encircling the filling tube.,The sensing tube extends down into acontainer while it is being filled, with the lower end of the tubelocated at the liquid level desired-in the container, as is well known.Another tube.76 extends from junction chamber'72 back to the side of thecontrol chamber 46 in the firstzmodulator for delivering a jet ofdeflecting air there on occasion. i

There also is a second normally closed valve,'i.e., a blow-down valve80, in case 30. It is provided with an actuating member 81 projectingfrom the case and which likewise engages a stationary cam for a momentduring each revolution of the machine to open the valve for a shortperiod. The inlet of this valve is connected by a tube 82 with the mainsupply tube 36, and the valve outlet is connected to the inlet of anairconducting element 83 like element 35. The main outlet ofthis elementis connected by a tube 84 tojunction chamber 72. The air-conductingelement also is provided with a by-pass 86 .to atmosphere that normallyis open but that is closed by a closure member 87 when a container israised into filling position. As shown in FIG. 1, this closure memberlikewise is mounted on the vertical rod 42, but it is below block 41 andengages the outlet of the by-pass 86 that extends from airconductingelement 83 into the block and downwardly out of its bottom. The closuremember is slidable on the rod, where it is supported by a coil spring 88so that the rod can be raised different distances by containers ofdifferent'heights without interference from the closure member in itsupper position.

As indicated before, when there is no container in position at a fillingstation served by the pneumatic control system illustrated in FIG. 3,the flow of air is as indicated by the arrows in that diagram, so thefilling valve is closed. When a bottle is placed on its support and israised, it raises rod 42 to open by-pass 38 and to close hy-pass 86 asshown in FIG. 4. Although this cuts off flow of deflecting air throughair-conducting'ele- 'ment 35 to the side of control chamber 46 of thefirst modulator 45, the pattern of air flow in that device remains thesame as before because the air streams from nozzles 49 and 50 are stilldeflected by the jet of air entering through tube 65 from the outputchamber of the other modulator. However, the rotating machine sooncarries the actuating member 81 of v the blow-down valve into engagementwith its cam so that the 'valve is opened momentarily to allow a jet ofair to flow into junction chamber 72 and down. through the level-sensingtube to clear that tube of any liquid product that'may be in it and toremove drops of liquid left on its lower end, as about to be filled.This jet of air is prevented by a check valve 89in tube 71 from flowingthrough that tube. If no container is present, closure member 87 willnot have been raised to close by-pass 86, so there will be no blow-downof drops of liquid' onto the machine or onto adjacent containers. Thishelps to keep the machine and its surroundings clean.

Immediately after the blow-down,. the actuating member 69 of the startvalve strikes its cam to open that valve to cause a jet of deflectingair to strike the side of the impinging streams in the second modulator69, as shown in FIG. 5. This deflects them through the chamber outlet tothe atmosphere, whereby the flow of air through tube 65 from outputchamber 64 is cut off. It follows that since there no longer are anyjets of deflecting air entering the side of control chamber 46 of thefirst modulator, the streams from the nozzles therein now impinge in theoutput chamber and build up pressure in tube 56 so that pneumatic relay66 is opened to deliver air to piston 25 in arm 11, thereby moving thepiston to open the filling valve. Air from the output chamber likewiseflows through tubes 56 and 57 to the control chamber of the secondmodulator to maintain the deflection of the air streams therein afterthe start valve closes on leaving its c'am. Furthermore, air from outputchamber 47 also flows through tube 71 to the sensing tube in acontinuous stream.

With the filling valve open, the bottle is filled with liquid from thetank until the liquid rising in the bottle shuts the outlet of thesensing tube. Immediately upon this occurring, air pressure'is built upin tube 76 between the junction chamber 72 and the control chamber 46 ofthe first modulator so that the impinging streams therein are againdeflected to the exhaust port of the control chamber, as shown in FIG.6. This shuts off flow of air through tube 56 to allow pneumatic relay66 to close, whereupon the spring 27 will close the filling valve.Stopping of air flow through tube 56 also stops the flow ofdeflectingair through tube 57 to the second modulator, so the opposed air streamsin that device again impinge in its output chamber 64, from which airflows out through tube 65 and back to the control chamber of the firstmodulator to maintain air stream deflection therein even though thedeflecting air from junction chamber 72 was shut off the moment the jetof air from tube 76 entered control chamber 46. A variable restrictor 91in tube 53 permits the system to be tuned so that there will be thecorrect air flow to the nozzles of both modulators.

As soon as the filled bottle is lowered to release it from guide 6, theclosure member 39 for the first airconducting element 35 is allowed todescend and close its by-pass 38, and the closure 87 for the secondaireonducting element 83 drops away from its by-pass 86. Consequently,the circuit returns to the condition shown in FIG. 3, ready for the nextcontainer to be filled.

The pneumatic pressure system disclosed herein operates with only twofluidic control devices and two cam-operated valves. The containeritself determines whether the filling valve will open and the blow-downoperate. In the absence of a container the filling valve remains closedand the blow-down does not operate even though the machine otherwisegoesthrough its eycle.

In the modification illustrated in'FIGS. 7 and 8 most of the system isthe same as the one just described, so like elements have been given thesame reference numbers for ease of comparison. The'differences lie inthe elimination of variable restrictor 9], tube 71 and check valve 89,and the substitution therefor ofa third fluidie control device or impactmodulator 92. The inlets of control chamber 93 and output chamber 94 ofthis modulator are connected by tubes 95 and 96 to a tube 97 leadingfrom supply tube 36. The outlet of output chamber 64 of modulator-59 isconnected by a tube 98 to the side of control chamber 93, while theoutlet of output chamber 94 of the third modulator is connected tojunction chamber 72 by means ofa tube 99. As will be seen by the arrowsin FIG. 7, when no container is present there will be no air flow fromthe third modulator to the junction chamber and liquid level sensingtube 73.

When a container is raised into filling position and the start switch 68is opened, theflow from output chamber 64 of modulator 59 stops as itdid in FIG. 5, so the flow through tube 98 to the third modulatorlikewise stops, as indicated in FIG. 8. This allows the two streams ofair from the nozzles in modulator 92 to meet in its output chamber 94and flow out through tube 99 to junction chamber 72 and thelevel-sensing tube. When the container is filled, the system reverts towhat is shown in FIG. 6. Any flow of air up through tube 99 duringblow-down cannot affect the operation of the system. Since the firstimpact modulator 45 does not have to supply air for liquidlevel-sensing,it no longer isnecessary to have a variable restrictor in tube 53 foradjusting the flow thercthrough-as compared with the flow through tubes62 and 97.

According to the provisions of the patent statutes, I have explained theprinciple of my invention and have illustrated and described what I nowconsider to represent its best embodiment. However, I desire to have itunderstood that, within the scope of the appended claims, the inventionmay be practiced otherwise than as specifically illustrated anddescribed.

I claim:

l. In a container filling machine, a'pneumatic pressure system forcontrolling the operation of means for opening a filling valve, thesystem comprising first and second fluidic control devices each providedwith a controlchamber and an output chamber connected by an orifice,each control chamber having an outlet to atmosphere and each outputchamber having an air pressure outlet, each fluidic control devicehaving a pair of opposed inlets aligned with said orifice wherein ineach of the fluidic control devices one of said pair of inlets opensinto said control chamber and the other of said pair of inlets opensinto said outlet chamber, means for continuously delivering air underpressure to both inlets simultaneously to form air streams that normallymeet in the output chamber to produce air pressure therein, a firstconduit connecting the pressure outlet of the first control device withsaid valve-opening means to open the filling valve when there is airpressure in said conduit, a second conduit connecting the pressureoutlet of the first control device with the control chamber of thesecond control device to direct a jet of air against the side of the airstream therein to defleet the streams in that device to the outlet ofthe control chamber, a third conduit connecting the pressureoutlet ofthe second control device with the control chamber of the first controldevice to direct a jet of dc fleeting air against the side of the airstream therein, a first means for conducting air from saidair-delivering means to the control chamber of the first control de-'vice todirect a jet of deflecting air against the side of the air streamtherein while no container is in filling position, means operated by acontainer in filling position for stopping the jet of deflecting airfrom said conduct ing means, a normally closed valveconnecting said airdelivering means with the control chamber of the second control deviceand adapted to be opened while a container is in filling position todirect a pulse of de fleeting air against the side of the air stream inthe con trol chamberof the second control device, whereby air pressurewill be produced'in the output chamber of the first control device tooperate said filling valve opening means and deliver air to said secondconduit, and second means for deflecting the air stream in the controlchamber of the first control device as soon as a container is filled. I

2. In acontainer filling machine system according to claim 1, saidsecond means for deflecting the air stream in the control chamber of thefirst control of the first eontroldevice including a level-sensing tubehaving an inlet and an outlet, the'outlet of the-tube being insert? ablein the upper part of a container being filled, a fourth conduitconnecting the pressure outlet of the first control device with theinlet ofsaid tube for delivering a stream of air from the tube outletduring container filling, and a fifth conduit connecting" thetube inletwith the control chamber of the first control device to direct a pulseof deflecting air against the side of the air stream therein when risingliquid in a container closes the outlet of said tube. I

3. In a container filling machine system according to claim 2, anormally closed blow-down valve connecting said air-delivering meanswith said tube inlet and adapted to be opened and closed before saidfilling valve is opened, and a eheck valve in said fourth eonduit forpreventing air flow back through that conduit while the blow-down valveis open.

4. In a container filling machine system according to claim 3, meansbetween the blow-down valve and said tube inlet for diverting air fromthat valve to atmosphere if said blowdown valve is opened when nocontainer is in filling position. 1

5. In a container filling machine system according to claim 3, meansbetween the blow-down valve and said tube inlet for conducting airbetween them, said lastmentioned air-conducting means including aby-pass to atmosphere, a closure member spaced from the bypass, andmeans actuated by a container in filling position for moving saidclosure member into by-pass closing position.

6. In a container filling machine system according to claim 3, meansbetween the blow-down valve and said tube inlet for conducting airbetween them, said lastmentioned air-conducting means including aby-pass to atmosphere, and a closure member spaced from the bypass, saidfirst air conducting means including a by-pass to atmosphere, and aclosure member normally closing the last-mentioned by-pass, andsaid'system including a vertically movable container guide, and meansmovable upwardly by said guide to lift said first-mentioned closuremember into by-pass closing position and to simultaneously lift saidsecond-mentioned closure member-away'from the adjoining by-pass to openit.

7. in a container filling machine system according to claim 1, saidfirst air-conducting means including a normally closed by-pass toatmosphere, and means actuated by a container in filling position-foropening said by-pass. i

8. ln a container filling machine system according to claim 1, saidfirst air-conducting means including a bypass to atmosphere, a closuremembernormally closing said by-pass, and means actuated by a container.in filling position for moving said closure member away from saidby-pass to open it.

9. In a container filling machine system according to claim 8, saidmeans actuated by a container in filling position including a verticallymovable container guide, means for raising a container beneath saidguide to raise the guide, and means movable upwardly by said guide forlifting said closure member.

10. In a container filling machine system according to claim 1, saidsecond means for deflecting the air stream in the control chamber of thefirst control of the first control device including a level-sensing tubehaving an inlet and an outlet, the outlet of the tube being insertablein the upper part of a container being filled, a third fluidic controldevice provided with a control chamber having an outlet to atmosphereand with an output chamber having an air pressure outlet, the chambersof said third device being connected by an orifice and each chamberhaving an opposed inlet aligned with that orifice, meansfor continuouslydelivering air under pressure to both of said last-mentioned inletssimultaneously, a conduit connecting the pres-- sure outlet of thesecond control device with the control chamber of the third controldevice to direct a jet of deflecting air into it, a conduit connectingthe pressure outlet of the third control device with the inlet of saidtube, and a conduit connecting the tube inlet with the control chamberof the first control device to direct the outlet of said tube,

1. In a container filling machine, a pneumatic pressure system forcontrolling the operation of means for opening a filling valve, thesystem comprising first and second fluidic control devices each providedwith a control chamber and an output chamber connected by an orifice,each control chamber having an outlet to atmosphere and each outputchamber having an air pressure outlet, each fluidic control devicehaving a pair of opposed inlets aligned with said orifice wherein ineach of the fluidic control devices one of said pair of inlets opensinto said control chamber and the other of said pair of inlets opensinto said outlet chamber, means for continuously delivering air underpressure to both inlets simultaneously to form air streams that normallymeet in the output chamber to produce air pressure therein, a firstconduit connecting the pressure outlet of the first control device withsaid valve-opening means to open the filling valve when there is airpressure in said conduit, a second conduit connecting the pressureoutlet of the first control device with the control chamber of thesecond control device to direct a jet of air against the side of the airstream therein to deflect the streams in that device to the outlet ofthe control chamber, a third conduit connecting the pressure outlet ofthe second control device with the control chamber of the first controldevice to direct a jet of deflectIng air against the side of the airstream therein, a first means for conducting air from saidair-delivering means to the control chamber of the first control deviceto direct a jet of deflecting air against the side of the air streamtherein while no container is in filling position, means operated by acontainer in filling position for stopping the jet of deflecting airfrom said conducting means, a normally closed valve connecting said airdelivering means with the control chamber of the second control deviceand adapted to be opened while a container is in filling position todirect a pulse of deflecting air against the side of the air stream inthe control chamber of the second control device, whereby air pressurewill be produced in the output chamber of the first control device tooperate said filling valve opening means and deliver air to said secondconduit, and second means for deflecting the air stream in the controlchamber of the first control device as soon as a container is filled. 2.In a container filling machine system according to claim 1, said secondmeans for deflecting the air stream in the control chamber of the firstcontrol of the first control device including a level-sensing tubehaving an inlet and an outlet, the outlet of the tube being insertablein the upper part of a container being filled, a fourth conduitconnecting the pressure outlet of the first control device with theinlet of said tube for delivering a stream of air from the tube outletduring container filling, and a fifth conduit connecting the tube inletwith the control chamber of the first control device to direct a pulseof deflecting air against the side of the air stream therein when risingliquid in a container closes the outlet of said tube.
 3. In a containerfilling machine system according to claim 2, a normally closed blow-downvalve connecting said air-delivering means with said tube inlet andadapted to be opened and closed before said filling valve is opened, anda check valve in said fourth conduit for preventing air flow backthrough that conduit while the blow-down valve is open.
 4. In acontainer filling machine system according to claim 3, means between theblow-down valve and said tube inlet for diverting air from that valve toatmosphere if said blowdown valve is opened when no container is infilling position.
 5. In a container filling machine system according toclaim 3, means between the blow-down valve and said tube inlet forconducting air between them, said last-mentioned air-conducting meansincluding a by-pass to atmosphere, a closure member spaced from theby-pass, and means actuated by a container in filling position formoving said closure member into by-pass closing position.
 6. In acontainer filling machine system according to claim 3, means between theblow-down valve and said tube inlet for conducting air between them,said last-mentioned air-conducting means including a by-pass toatmosphere, and a closure member spaced from the by-pass, said first airconducting means including a by-pass to atmosphere, and a closure membernormally closing the last-mentioned by-pass, and said system including avertically movable container guide, and means movable upwardly by saidguide to lift said first-mentioned closure member into by-pass closingposition and to simultaneously lift said second-mentioned closure memberaway from the adjoining by-pass to open it.
 7. In a container fillingmachine system according to claim 1, said first air-conducting meansincluding a normally closed by-pass to atmosphere, and means actuated bya container in filling position for opening said by-pass.
 8. In acontainer filling machine system according to claim 1, said firstair-conducting means including a by-pass to atmosphere, a closure membernormally closing said by-pass, and means actuated by a container infilling position for moving said closure member away from said by-passto open it.
 9. In a container filling machine system according to claim8, said means actuated by a container in filling position including avertically movable container guide, means for raising a containerbeneath said guide to raise the guide, and means movable upwardly bysaid guide for lifting said closure member.
 10. In a container fillingmachine system according to claim 1, said second means for deflectingthe air stream in the control chamber of the first control of the firstcontrol device including a level-sensing tube having an inlet and anoutlet, the outlet of the tube being insertable in the upper part of acontainer being filled, a third fluidic control device provided with acontrol chamber having an outlet to atmosphere and with an outputchamber having an air pressure outlet, the chambers of said third devicebeing connected by an orifice and each chamber having an opposed inletaligned with that orifice, means for continuously delivering air underpressure to both of said last-mentioned inlets simultaneously, a conduitconnecting the pressure outlet of the second control device with thecontrol chamber of the third control device to direct a jet ofdeflecting air into it, a conduit connecting the pressure outlet of thethird control device with the inlet of said tube, and a conduitconnecting the tube inlet with the control chamber of the first controldevice to direct a pulse of deflecting air against the side of the airstream therein when rising liquid in a container closes the outlet ofsaid tube.